Features 1、UPGRADE ENGRAVING MODULE: Designed N30820 engraving module with 5.5W output power, can cut 3mm thick plywood cleanly at one time 2、TECHNICAL PARAMETERS: If compatible with other CNC equipment, the NEJE engraving module must correspond to the application interface voltage of 3.3~12V, duty cycle 1%~100%, and frequency 0-20kHz 3、INTELLIGENT ADJUSTMENT: Built in fast intelligent drive, realize timely temperature detection, intelligent adjustment of the fan to reduce noise, guarantee safe and quiet engraving work 4、NO ASSEMBLY REQUIRED: As a professional engraving tool, the engraving module is fixed with spring clips without any screws. Wide range of engraving materials up to 5‑8mm 5、WIDE USES: Can engrave wood, MDF, leather, paper, cotton, etc. Stainless steel, glass, transparent acrylic can be engraved after spraying. Bring you more creative work to cut and engrave on DIY business signs, greeting cards, miniatures, engraved children's drawings Specification Item Type: NEJE Laser Module Model Number: N30820 Heat Sink Material: Aircraft aluminum, brass shell Luminous Color: Blue Laser Diode: NUBM0A with NEJE Cap Technology LD Current: 3.2A Section Size: Approx. 30 x 30mm / 1.18 x 1.18in Heat Dissipation Method: 40mm copper core, heat sink, thermal grease, 15000rpm cooling fan Input Voltage: DC 12V Can Engrave: MDF, balsa, paper, wood, fabric, plastic, leather, plywood, foam, anodized aluminum Can Not Engrave: Metal, glass, stone, ceramic, PCB, stainless steel, reflective material, transparent material Technical Parameter: Input Power: 20W Laser Output Power: 5.5W (5500mW) Wavelength: 445-450nm Beam Shape: Dot (Focusable) Working Voltage: DC 12V TTL and PWM Modulation: Yes, compatible with TTL and PWM modulation Input Voltage: DC 12V PWM or TTL Input: DC3.3V-12V Input Interface: PH2.0-4Pin (+,-, PWM or TTL, Temperature), 3Pin (+,-, PWM or TTL) , 2Pin and 2Pin (+,-) and (PWM or TTL,-) Drive Mode: External ACC Safe Temperature Range: <70℃ Service Life: 20,000 Hours Test: Material: Plywood, thickness 3mm Speed ​​330, cut 3 times, each cut 1.0mm Speed ​​200, cut 2 times, each cut 1.5mm Speed ​​100, cut once, each cut 3mm Package List 1 x E30820 Module 1 x Air Pipe 1 x Air Pipe Adapter 1 x Interface Adapter Board 3 x Wire 1 x Module General User Manual 1 x Sliding Card Slot 2 x Hex Key 2 x Accessories 2 x Screws 2 x Nuts 2 x Spacers